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PP&E - Accumulated Depreciation (Details) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year $ 4,947,233    
Depreciation (998,031) $ (1,185,795) $ (1,348,046)
PP&E at end of year 4,330,508 4,947,233  
Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 5,000,524    
PP&E at end of year 4,376,511 5,000,524  
PP&ES | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (6,202,401) (5,528,567)  
Incorporation by acquisition (70,962)    
Depreciation (998,031) (1,185,795)  
Currency translation adjustments 96,544 55,436  
Reclassifications 1,862    
Decrease and reclassifications 325,161 456,525  
PP&E at end of year (6,847,827) (6,202,401) (5,528,567)
PP&ES | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 5,000,524    
PP&E at end of year 4,376,511 5,000,524  
Real Estate | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (230,858) (195,613)  
Incorporation by acquisition (97)    
Depreciation (37,092) (38,938)  
Currency translation adjustments 4,241 3,336  
Reclassifications 1,821    
Decrease and reclassifications 257 357  
PP&E at end of year (261,728) (230,858) (195,613)
Real Estate | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 753,289    
PP&E at end of year 714,227 753,289  
Switching Equipment | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (288,567) (241,476)  
Incorporation by acquisition (2,333)    
Depreciation (50,685) (60,854)  
Currency translation adjustments 10,622 13,763  
Reclassifications (363,712)    
Decrease and reclassifications 36    
PP&E at end of year (694,639) (288,567) (241,476)
Switching Equipment | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 107,124    
PP&E at end of year 175,247 107,124  
Fixed Network and Transportation | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (2,768,692) (2,522,687)  
Incorporation by acquisition (57,803)    
Depreciation (426,047) (473,867)  
Currency translation adjustments 39,030 (10,853)  
Reclassifications 363,712    
Decrease and reclassifications 187,420 238,715  
PP&E at end of year (2,662,380) (2,768,692) (2,522,687)
Fixed Network and Transportation | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 1,936,921    
PP&E at end of year 1,810,837 1,936,921  
Mobile Network Access | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (750,261) (635,763)  
Depreciation (99,612) (127,825)  
Currency translation adjustments 9,657 13,240  
Reclassifications 605    
Decrease and reclassifications 43 87  
PP&E at end of year (839,568) (750,261) (635,763)
Mobile Network Access | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 346,161    
PP&E at end of year 314,134 346,161  
Tower and Pole | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (129,083) (115,338)  
Depreciation (16,191) (17,164)  
Currency translation adjustments 2,485 3,251  
Reclassifications (59)    
Decrease and reclassifications   168  
PP&E at end of year (142,848) (129,083) (115,338)
Tower and Pole | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 134,997    
PP&E at end of year 116,092 134,997  
Power Equipment and Installations | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (242,554) (206,930)  
Depreciation (36,281) (39,076)  
Currency translation adjustments 7,098 3,452  
Reclassifications (48)    
PP&E at end of year (271,785) (242,554) (206,930)
Power Equipment and Installations | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 183,543    
PP&E at end of year 166,106 183,543  
Computer equipment | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (1,337,963) (1,122,432)  
Incorporation by acquisition (1,431)    
Depreciation (196,771) (237,158)  
Currency translation adjustments 15,624 21,607  
Reclassifications (185)    
Decrease and reclassifications   20  
PP&E at end of year (1,520,726) (1,337,963) (1,122,432)
Computer equipment | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 448,150    
PP&E at end of year 361,851 448,150  
Goods lent to customers at no cost | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (127,943) (180,241)  
Incorporation by acquisition (7,725)    
Depreciation (117,593) (170,977)  
Currency translation adjustments 3,326 6,570  
Decrease and reclassifications 130,372 216,705  
PP&E at end of year (119,563) (127,943) (180,241)
Goods lent to customers at no cost | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 186,404    
PP&E at end of year 125,567 186,404  
Vehicles | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (119,208) (113,912)  
Incorporation by acquisition (572)    
Depreciation (4,961) (5,980)  
Currency translation adjustments 800 211  
Reclassifications 1,008    
Decrease and reclassifications 7,020 473  
PP&E at end of year (115,913) (119,208) (113,912)
Vehicles | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 32,950    
PP&E at end of year 27,813 32,950  
Machinery, diverse equipment and tools | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (161,104) (157,861)  
Incorporation by acquisition (570)    
Depreciation (5,136) (4,619)  
Currency translation adjustments 2,212 1,376  
Reclassifications (1,280)    
PP&E at end of year (165,878) (161,104) (157,861)
Machinery, diverse equipment and tools | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 26,691    
PP&E at end of year 24,077 26,691  
Other | Accumulated Depreciation And Amortisation      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year (46,168) (36,314)  
Incorporation by acquisition (431)    
Depreciation (7,662) (9,337)  
Currency translation adjustments 1,449 (517)  
Decrease and reclassifications 13    
PP&E at end of year (52,799) (46,168) $ (36,314)
Other | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 29,608    
PP&E at end of year 26,218 29,608  
Construction in progress | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 347,259    
PP&E at end of year 159,286 347,259  
Materials | Net carrying value      
Reconciliation of changes in property, plant and equipment      
PP&E at beginning of year 467,427    
PP&E at end of year $ 355,056 $ 467,427